Shulou(Shulou.com)06/03 Report--

This article mainly shows you "vue.js how to achieve array de-duplication", the content is easy to understand, clear, hope to help you solve your doubts, the following let the editor lead you to study and learn "vue.js how to achieve array de-duplication" this article.

Vue.js method for array deduplication: use two for loops to determine the id of each item, such as [that.positions.map (train= > {that.new_Positions.push (train.trainId)}) that.resul...].

This article operating environment: windows10 system, vue 2.5.2, thinkpad T480 computer.

Array deduplication in vue.js can be considered by using for loop and. New set two ways to achieve, let's take a look at it!

The first method:

Use 2 for loops to judge the id of each item

The specific code is as follows:

/ / that.positions.map (train= > {/ / that.new_Positions.push (train.trainId) / /}) / / that.resultArr = []; / / deduplicated array / / var flag / / for (var i in that.new_Positions) {/ / flag = true / / for (var j in that.resultArr) {/ / if (that.resultArr [j] = = that.new_ Positions [I]) {/ / flag = false; / / break / /} / / if (flag) {/ / that.resultArr.push (that.new_ Positions [I]) / /} / / console.log ("that.resultArr:", that.resultArr)

The second method:

With. New set implementation

The specific code is as follows:

That.positions.map (train= > {that.new_Positions.push (train.trainId)}) that.new_Positions = [... new Set (that.new_Positions)] Console.log ("that.resultArr:", that.new_Positions) above is all the content of the article "how to remove duplicates in arrays by vue.js". Thank you for reading! I believe we all have a certain understanding, hope to share the content to help you, if you want to learn more knowledge, welcome to follow the industry information channel!

Welcome to subscribe "Shulou Technology Information " to get latest news, interesting things and hot topics in the IT industry, and controls the hottest and latest Internet news, technology news and IT industry trends.